Burn to mint solidity - solidity

Question

Ok so I have an issue and I'm not even sure where to begin. I NEED a burn to mint function within a smart contract for an erc20 token. It's on a 1:1 ratio version 1 for version 2. All that I've seen in my 4 hours of searching is more or less websites or dapps that do the transfer when a wallet is attached. Thank you for your time .

Answer 1

Not possible unless the version 1 already implements its part.
In the example below:
Deploy Version1
Deploy Version2, passing it the Version1 address
Pass the Version2 address to Version1 function setVersion2Address()
Verify the deployer token balances using the balanceOf() function on both contracts - the deployer now has 1000 tokens of Version1 and 0 tokens of Version2
Invoke burnToMint() on Version2, passing it the 1000 tokens as arguments
Verify the deployer token balances using the balanceOf() function on both contracts - the deployer now has 0 tokens of Version1 and 1000 tokens of Version2
pragma solidity ^0.8;
import "#openzeppelin/contracts/token/ERC20/ERC20.sol";
import "#openzeppelin/contracts/access/Ownable.sol";
contract Version1 is ERC20, Ownable {
address version2;
modifier onlyVersion2 {
require(msg.sender == version2);
_;
}
constructor() ERC20("Version 1", "v1") {
_mint(msg.sender, 1000);
}
function setVersion2Address(address _version2) external onlyOwner {
version2 = _version2;
}
function version2Burn(address from, uint256 amount) external onlyVersion2 {
_burn(from, amount);
}
}
contract Version2 is ERC20 {
Version1 version1;
constructor(Version1 _version1) ERC20("Version 2", "v2") {
version1 = _version1;
}
function burnToMint(uint256 amount) external {
version1.version2Burn(msg.sender, amount);
_mint(msg.sender, amount);
}
}